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CVE Record

CVE-2020-2823: Vulnerability in the Oracle Common Applications Calendar product of Oracle E-Business Suite (component: Not...

Vulnerability in the Oracle Common Applications Calendar product of Oracle E-Business Suite (component: Notes). Supported versions that are affected are 12.1.1-12.1.3. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Common Applications Calendar. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle Common Applications Calendar, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Common Applications Calendar accessible data as well as unauthorized update, insert or delete access to some of Oracle Common Applications Calendar accessible data. CVSS 3.0 Base Score 8.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N).

HighCVSS 8.2Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This is a high-severity Oracle E-Business Suite issue affecting Common Applications Calendar Notes. An unauthenticated attacker reaching the service over HTTP could compromise calendar data if a separate user interaction occurs. The main business risk is exposure of critical data and some unauthorized data changes.

Executive priority

Treat as a priority for any exposed Oracle E-Business Suite 12.1.x environment. The vulnerability can expose critical data and enable limited data modification, though sources do not confirm active exploitation. Patch planning should follow Oracle’s CPU guidance.

Technical view

CVE-2020-2823 affects Oracle Common Applications Calendar, Notes component, versions 12.1.1 through 12.1.3. CVSS 8.2: network exploitable over HTTP, low complexity, no privileges, user interaction required, changed scope, high confidentiality impact, low integrity impact, no availability impact.

Likely exposure

Exposure is limited to organizations running Oracle E-Business Suite Common Applications Calendar versions 12.1.1-12.1.3, especially where HTTP access is available to untrusted networks. The source bundle does not identify affected CPEs, deployment patterns, or whether later versions are affected.

Exploitation context

The source describes easy network exploitation over HTTP but requiring human interaction from someone other than the attacker. The bundle does not include exploit details, proof-of-concept status, or confirmed active exploitation. It is not listed as CISA KEV in the provided data.

Researcher notes

Important unknowns remain: no CWE is supplied, the source bundle does not describe the required user interaction, and no exploit telemetry is provided. Research should focus on version confirmation, Notes component exposure, HTTP reachability, and Oracle CPU applicability.

Mitigation direction

  • Inventory Oracle E-Business Suite Calendar deployments and confirm exact 12.1.x versions.
  • Review Oracle April 2020 CPU guidance for the relevant E-Business Suite patch.
  • Restrict HTTP access to trusted networks until vendor guidance is applied.
  • Prioritize remediation for internet-facing or partner-facing E-Business Suite systems.

Validation and detection

  • Confirm whether Common Applications Calendar Notes is enabled on affected EBS systems.
  • Check system version against Oracle E-Business Suite 12.1.1 through 12.1.3.
  • Verify Oracle CPU patch status through approved asset or patch management records.
  • Review web access paths to determine whether HTTP is reachable from untrusted networks.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2020-2823 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.2 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.2CVSS 3.0HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N2.84.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

8.2High
CVSS 3.0 vector shape for CVE-2020-2823Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Oracle CorporationCommon Applications Calendar12.1.1-12.1.3Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.